Home / 11,158.11-15,397.56-6,680.84

Finding the Fourth Proportional to 11,158.11, 15,397.56 and 6,680.84

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Solution

The fourth proportional to 11,158.11, 15,397.56 and 6,680.84 is: 9,219.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,158.11 : 15,397.56 = 6,680.84 : x
  2. Step 2: Convert to fraction form
    11,158.11/15,397.56 = 6,680.84/x
  3. Step 3: Cross multiply
    11,158.11x = 15,397.56 × 6,680.84
  4. Step 4: Simplify right side
    11,158.11x = 102,868,557.76
  5. Step 5: Solve for x
    x = 102,868,557.76/11,158.11
  6. Step 6: Final answer
    x = 9,219.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.